Indicating device for automobile radiators



May s, 1923'.` 1,454,230

R. R. FUDGE INDICATING DEVICE FOR'AUTOMOBILE RADIATORS ,Filed Sept. 23 1922 threaded lower end. A sleeve or RAYMOND R. FUVDGE, 0F FORT-WORTH, TEXAS.

INDICATING DEVICE FOR` AUTOMOBILE BADIATORS.

Application led September 23, 1822. Serial No. 590,102.

To all wl'tom it may concern:

Be it known that I, RAYMOND R. FUDGE, a

citizen of the United States, residing at Fort' Worth, in the county of Tarrant and State of Texas, have invented certain new and useful Improvements in Indicating Devices for Automobile Radiators, of which the following is a specification.

The invention relates toA certain new und useful improvements in temperature indicators and pertains more especially to indicators for registering the temperature of the water of automobile radiators.

The primary object of the invention is to provide an indicator which is visible to and can accordingly be easily read. by the driver at night and one wherein atmospheric temperature is prevented from exerting its in luence upon and thus destroying t e accuracy of the indicating media in correctly registering the water temperature.

The invention further aims to utilize the reflection of the headlight rays in enabling night reading by the driver.

The invention has further and other ob 'jects which will be later set forth and manifested in the course of the vfollowing deseription. A

'in the drawings Figure l, is a. rear side elevation, the radi ator cap being broken away and shown partly in section;

Figure 2, is a similar view, parts being omitted;

Fi u're 3, is a fragmentary vertical seotiona view, partly in side elevation;

Figure 4, is a section on line v4--4 of Figure 1, and

Figure 5, is a section on line 5-5 of Figure 3.

In proceeding in accordance with the present invention, the radiator capA is designated 1, and is mounted on the tubular shank 20 of a stem having a head 10, the shank being perforated at A and having a jacket 3 surrounds the stem in spaced relation thereto andforms a water space in conjunction therewith, the sleeve at its upper end engaging the cap i and at its lower end is engaged by a nut 11 threaded on thelower end of the v shank.

The sleeve 3 is thus held rigidly onto the stem and the cap 1 in turn rigidly held against the head 10 of the stern, whereby all of the recited parts are Secured in their assembled relation by the nut 11.

Then per end of the sleeve has an up- Wardly ac ing conical waterd collecting cuna# secured thereto, which conveys the water through openings A formed in sleeve 3 into the water space formed by the shank 2O and sleeve or jacket 3.` A portion of the water and vapors arising to the surface of the radiator cap from the heated radiator and dueto boiling` and churning of the water permits water and vapor to collect in the water collecting cup 2 and it passes thence through perforations A-A to space surrounding mercury tube 6'. Below the cup' 2, a series of downwardly facing conical heat radiating ns 4 are secured to the sleeve 3.

The mercury tube 6 has mercury 5 therein and is arranged to project into the shank 20 and into the dial 13, the latter having a blue coloredV area 7, to designate cool water; a' red coloredl area 9 to designate danger or titi overheating of the water and a plain colored area 8 with suitable indicia, as 0. K. to

designate normal condition of the water.

For the purpose of enabling reading of the temperature at night, the reiection of the light rays of the automobile headlight is utilized in conjunction with a pair of mirrors 12 the latter disposed at approximately right anglcs'to each other and with their adjacent i `cator including a dial having an upperfdana ger indicating area, a lower subnormal indicating area and an intermediate normal. indicating arca, a mercury tube carried by the dial and projecting thercbelow, a 4perforated tubular stem surrounding the projecting end of the tube, a 4sleeve surrounding the stem and spaced therefrom to form a water space in conjunctiontherewith, a Water collecting cup vsecured to the sleeve adjacent the top thereof., the sleeve having erforations to conduct the Water entering die cup into the water space, and heat radiating iins carried by the sleeve and disposed below the cup.

2. An auto radiator temperature indicator including a dial having an upper danger indicating area, a lower subnormal indicating area vand an intermediate normal indi-4 iubulir sfuem surrounding the projecting end ef he tube, e sleeve surrounding the, sii/em and spneedtherefrom to form aiwater space in conjunction therewith, a water collecting cup secured toA the sleeve adjacent the top thereof, the sleeve having erforations to eonducehe water entering t e cup into lzhev if? Wel/er space, heat redlatmg; fins on the sleeve below the cup, and heed on the siem, n, rediator cap on the stem engaged with the heed, the upper end of the sleeve enge ing the cap to force same against the hea and e nut threaded on the stem and engaging the lower end of the sleeve.

In testimony whereof ll have signed my -name to this specification.

` RAYMUND n. Finnen. 

